|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
光谱法研究敏化的tio2纳米粒子光催化降解罗丹明b的途径
, PP. 64-67
Keywords: 紫外/可见光谱,荧光光谱,敏化氧化钛,罗丹明b
Abstract:
采用sol-gel法制备了纳米氧化钛(tio2),并用邻苯二甲酸(o-pta)对tio2进行敏化修饰,得到了邻苯二甲酸敏化纳米氧化钛(o-pta/tio2)催化剂.用傅里叶变化红外光谱(ft-ir)对其进行表征,发现邻苯二甲酸已经成功连接到tio2的表面,并对其光催化性能进行了研究.以罗丹明b(rhb)为催化降解目标物,采用紫外/可见光谱(uv-vis)法和荧光光谱(fl)法对催化降解rhb的产物进行研究,结果显示,在可见光下tio2催化降解rhb时,是直接矿化rhb;同条件下o-pta/tio2催化降解rhb时,是分步降解.对两种光催化路径的探究,可以为光催化降解以rhb为代表的一系列染料提供理论基础.研究表明,无论采用紫外/可见光谱法还是采用荧光光谱法对rhb的降解产物进行表征,都可以得到一致的结果,方法简便易操作.
| [1] | wangq,chencc,zhaod,eta.lchangeofadsorptionmodesofdyesonfluorinatedtio2anditseffectonphotocatalyticdegradationofdyesundervisibleirradiation[j].langmuir,2008,24(14):7338-7345
|
| [2] | hagfelda,gratzelm.light-inducedredoxreactionsinnanocrystallinesystems[j].chemrev,1995,95(1):49-68.
|
| [3] | zhaojc,wutx,wukq,eta.lphotoassisteddegradationofdyepollutants.3.degradationofthecationicdyerhodaminebinaqueousanionicsurfactant/tio2dispersionsundervisiblelightirradiation:evidencefortheneedofsubstrateadsorptionontio2particles[j].environscitechno,l1998,32(16):2394-2400.
|
| [4] | huxf,tariqm,mawh,eta.loxidativedecompositionofrhodaminebdyeinthepresenceofvo2+and/orpt(iv)undervisiblelightirradiation:n-deethylation,chromophorecleavage,andmineralization[j].jphyschemb,2006,110(51):26012-26018
|
| [5] | 郑怀礼,张峻华,熊文强.纳米tio2光催化降解有机污染物研究与应用新进展[j].光谱学与光谱分析,2004,24(8):1003-1008
|
| [6] | ouy,linjd,zouhm,eta.leffectsofsurfacemodificationoftio2withascorbicacidonphotocatalyticdecolorizationofanazodyereactionsandmechanisms[j].journalofmolecularcatalysisa,2005,241:59-64
|
| [7] | wutx,liugm,zhaojc,eta.lphotoassisteddegradationofdyepollutants.v.sel-fphotosensitizedoxidativetransformationofrhodaminebundervisiblelightirradiationinaqueoustio2dispersions[j].jphyschemb,1998,102(30):5845-5851.
|
| [8] | liug,lix,zhaoj,hidakah,eta.lphotooxidationpathwayofsulforhodamine-b.dependenceontheadsorptionmodeontio2exposedtovisiblelightradiation[j].environscitechno,l2000,34(18):3982-3990.
|
| [9] | hyunwoongp,wonyongc.photocatalyticreactivitiesofnafion-coatedtio2forthedegradationofchargedorganiccompoundsunderuvorvisiblelight[j].jphyschemb,2005,109(23):11669-11674.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
